If the majority of people started citing commonly that there were 57 genders, science would have nothing to do with it, it would just be a commonly accepted fact either way. The reason it's not that way is because a majority of people recognize having more than three two genders is confusing and stupid. Saying "because science" is a handicapped blanket statement that shows you have no idea what you're talking about.
you didn't get my argument
science is objective
it may be our tailored to how we see the universe but science and physics are objective constants
what you're basically arguing is
Much like the reason why people call Frankenstein's monster Frakenstein himself, if consensus is to define X as one thing, it is that thing regardless of your opinion unless you somehow get everyone to think of it the same way as you. This is how etymology works.
which is why I brought up science, which is objective
if everyone woke up thinking the world was flat does that make the world flat?
the same can be said for gender